Those who insist that the answer to everything is "morality" sort of amuse me.
Yes, if "moral" meant the same to everyone, that could fix a lot of problems. If everyone agrees on the baseline, then it's going to work even if some people break the rules.
But morality is situational ethics-- it depends on your culture, religion, and experiences. So no one even agrees what's moral-- which is why they'd rather appeal to morality than ethics, except when they use the word "ethics" when talking about "morality" (which I see a lot).
The Constitution only works to govern "a moral people", but governing others is unethical. You can't force an unethical system on people, then claim it fails because the people aren't moral enough. And, by "moral" I suppose you'd mean they don't agree with your cultural/religious notions of how everyone else is to be governed. Well, you can claim that, but you'd look dumb.
If your idea of "moral" is that everyone submit to political "authority" and pretend it's legitimate, then I absolutely reject your morality. I'll stick to being ethical instead.